来自津巴布韦卡里巴湖的Marcusenius macrolepidotus(Peters)斗牛犬鳃的Tresuncinidactylus wilmienae gen.et sp.n的描述(单基因门:Gyrodactylidae)。

IF 1.5 4区 医学 Q3 PARASITOLOGY Folia Parasitologica Pub Date : 2021-11-16 DOI:10.14411/fp.2021.025
Iva Prikrylova, Maxwell Barson, Andrew P Shinn
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引用次数: 4

摘要

非洲大陆的内陆水域系统中有丰富多样的鱼类和两栖动物,它们是Gyrodactylidae van Beneden et Hesse(1832)的7属单系生物的宿主。2011年8月,从津巴布韦卡里巴湖的2只牛头犬(Marcusenius macrolepidotus, Peters)的鳃中采集到8种旋动类寄生虫。18S rDNA的形态鉴定和测序证实,这些标本属于一个新的胎生属——trresuncinidactylus wilmienae gen. et sp. n。其附着装置由一对大而细长的钩环组成,其根明显扁平,由一根简单而狭窄的背杆连接。腹侧棘小,舌状膜薄,无明显的前外侧突。有一种形态类型的16个边缘钩,但有三种不同的大小,有大的镰状镰刀,其长度与手柄的长度成比例相等。最大的两对边缘钩位于最靠近opisthaptor柄的位置,相邻的两对中等大小的边缘钩镰刀位于opisthaptor的外侧边缘。四对最小的边缘钩位于盗骨器的后缘。雄性的交配器官由一个肌肉发达的囊袋组成,内有大约30根细刺。利用最大似然和贝叶斯推断对18S rDNA的部分序列进行系统发育分析,将新属定位在非洲属的谱系中,并提出与新属关系最密切的属为Afrogyrodactylus Paperna(1968)、Citharodactylus Přikrylová (Shinn et Paladini, 2017)和Mormyrogyrodactylus Luus-Powell (Mashego et Khalil, 2003)。
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Description of Tresuncinidactylus wilmienae gen. et sp. n. (Monogenea: Gyrodactylidae), from the gills of the bulldog, Marcusenius macrolepidotus (Peters) from Lake Kariba, Zimbabwe.

The African continent has a rich diversity of fish and amphibians in its inland water systems that serve as hosts for monogeneans of seven genera of the Gyrodactylidae van Beneden et Hesse, 1832. In August 2011, eight gyrodactylid parasites were collected from the gills of two specimens of bulldog, Marcusenius macrolepidotus (Peters), from Lake Kariba, Zimbabwe. Morphometric evaluation and sequencing of 18S rDNA confirmed that the specimens represented a species of a new viviparous genus, Tresuncinidactylus wilmienae gen. et sp. n. The attachment apparatus consists of a single pair of large slender hamuli with prominently flattened roots that are connected by a simple, narrow dorsal bar. The ventral bar is small and possesses a thin lingulate membrane but no evident anterolateral processes. There are 16 marginal hooks of one morphological type, but of three different sizes, with large falculate sickles that are proportionaly equal in length to the length of their handles. The two largest pairs of marginal hooks are positioned closest to the opisthaptoral peduncle, the neighbouring two pairs of medium-sized marginal hook sickles are situated along the lateral margins of the opisthaptor. Four pairs of smallest marginal hooks are positioned along the posterior margin of the opisthaptor. The male copulatory organ consists of a muscular pouch armed with approximately 30 gracile spines. Phylogenetic analyses of partial sequences of the 18S rDNA using Maximum Likelihood and Bayesian Inference placed the new genus within the lineage of solely African genera and suggests Afrogyrodactylus Paperna, 1968, Citharodactylus Přikrylová, Shinn et Paladini, 2017 and Mormyrogyrodactylus Luus-Powell, Mashego et Khalil, 2003 as genera most closely related to the new genus.

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来源期刊
Folia Parasitologica
Folia Parasitologica 医学-寄生虫学
CiteScore
2.70
自引率
0.00%
发文量
25
审稿时长
>12 weeks
期刊介绍: FOLIA PARASITOLOGICA, issued in online versions, is an international journal that covers the whole field of general, systematic, ecological and experimental parasitology. It publishes original research papers, research notes and review articles. Contributions from all branches of animal parasitology, such as morphology, taxonomy, biology, biochemistry, physiology, immunology, molecular biology and evolution of parasites, and host-parasite relationships, are eligible. Novelty and importance in the international (not local or regional) context are required. New geographical records of parasites, records of new hosts, regional parasite and/or host surveys (if they constitute the principal substance of manuscript), local/regional prevalence surveys of diseases, local/regional studies on epidemiology of well known diseases and of parasite impact on human/animal health, case reports, routine clinical studies and testing of established diagnostic or treatment procedures, will not be considered. One species description will also not be considered unless they include more general information, such as new diagnostic characters, host-parasite associations, phylogenetic implications, etc. Manuscripts found suitable on submission will be reviewed by at least two reviewers.
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